(Newser)
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A small bomb went off outside a Bangkok police station as anti-government protesters continued their occupation of the Thai prime minister's office for a seventh day. Although nobody was injured in the blast, a senior government source told Reuters that the People's Alliance for Democracy "has launched a guerrilla war with us." The PAD denied responsibility for the explosion.

The PAD, a collection of monarchists, business leaders and youth activists, is trying to force out the government of Samak Sundaravej, which it calls a front for the exiled Thaksin Shinawatra. In a radio address yesterday, Samak vowed again that he would not resign. A resolution to the stalemate remains unclear. if neither side caves in, the prime minister could call an early election—or the army or king could intervene.